Fig. 4
From: Mix-and-matching as a promoter recognition mechanism by ECF σ factors
From in-vitro active to in-vitro inactive promoters (comparison with RpoD). Complementation between: a double-stranded (represented by extended −10) and single-stranded (represented by short −10) b double-stranded (extended −10) and total strength, c double-stranded (−10 extended) and double-stranded (−35) promoter elements is shown for in vitro active, all, and in vitro inactive σE promoters. The relevant correlations (indicated on the y-axis) are compared with the corresponding values for RpoD (where −15 element is used). The information on the relevant promoter datasets is indicated in the figure legend